Basic Face Detection and Face Recognition Using OpenCV

[87sgeric]

hi! i tested the .exe , why does it crash every time i tried saving a face? is there a fix directory I have to placed it in?

[toefel18]

@87sgeric make sure the extension of the image is .bmp (without the extension, the application might crash)

[87sgeric]

@87sgeric nvm i solved it, i have to fill in the image extension. Thanks!!

[dhruvmini01]

Thanks for the application. I have a question though. is there a way i can take frames from the eye, nose, and mouth detectors? Could you tell me how if possible

[toefel18]

@dhruvmini01 the system provides frames to the detectors, they analyze it for features. The class DetailedFaceDetector first scans for faces, if it finds a face, it tries to find the eyes, nose and mouth. Basic detectors expose their findings trough the getAreas() method, but DetailedFaceDetector provides a getDetailedFaceInfo() method which returns a map that maps faces to a feature map, it looks like: (facerectangle => (facefeature=>featurerectangle­)) you can look it up in google code.

[toefel18]

@TheRikkiJSmith i replied a while ago

[TheRikkiJSmith]

could you get back to that email I sent you about openCV and my final year project thanks :)



[rebkahibasdeys]

third query, any way i can save the output of this application??

[toefel18]

@rebkahibasdeys you can modify the source code yourself, this app is meant to get ppl started with a working demo!

[rebkahibasdeys]

p.s great tutorial. worked for me :-)

[rebkahibasdeys]

hey, i downloaded the zip source code given on the website.

can i modify the code to track, lets say a cup or a ball....

best.

if you could help me with that i'd be great...

[toefel18]

@rebkahibasdeys Hey, you can use the visual-control source project at google code and write a new detector class that contains the code for detecting a ball, cup, or whatever. You can look at the FaceDetector class to see how I implemented the face detection. I used the HaarLike features detector, but that's slow for tracking a ball. I am sure you can find much more efficient methods for that!, good luck.

[omi1990prakash]

hiii,,

do u know how can i use open cv in any java framework like eclipse ..

or simply with jdk.??

[toefel18]

@omi1990prakash Hey, no I have no experience with using OpenCV in Java. I'm not sure if wrappers exist. You can try to use swig or create something using JNI to interface with C++ code that does some OpenCV stuff for you.

[jamesbritto007]

hey i get this error

Description: error MSB6006: cmd.exe exited with code 3

file: Microsoft.cppcommon.targets

i have linked all the include files and the lib files of opencv, boost and qt....

plz help me out as soon as possible......

this error is from the visual control project......

[jamesbritto007]

@iamkenIT

No that dint help....

When i try clicking the error message microsoft.cppcommon.targets file is opened but there are few elements which is not recognized like

IntDirTrailingSlashWarning

YieldDuringToolExecution

TargetPath...

etc....

What am i supposed to do now....????

[toefel18]

I am not 100% sure about what's the problem. I would recommend using gray-scale images, but I think that's what you mean. A guess would be that adding more images sets of the Principal Component Analysis too much, returning the closest result every time. (that would be the same result you get) I don´t know much else.

[mssgpu]

nice work........i used the same code from servo magazine to hand gesture recognition of black and white images it works fine wen ever i train it with only 1 image from each gesture but if i increase the training images for a particular gesture wen i do testing it is jus giving the same result for all images wt might hav went wrong plz help............

[redanol]

nice

Thank you

[Tural192]

thank you.